Meriam M2110F SMART FLOW GAUGE - Manual (Page 26)

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11 SERIAL PORT SERVICE
The M2110F Smart Flow Gauge SetPoint and Current Loop models provide RS-232C communication capability.
To use the serial service, connect a standard “dumb terminal” or personal computer with terminal software as shown
in the wiring diagram on page 29. Set the terminal communication for 9600 baud, 8 data bits, no parity, one stop bit,
and no handshaking. The terminal should be able to display at least 24 lines and 70 columns.
11.1 THE MENU
All programmable items of the gauge are available from the menu. Included with the menu is a complete summary
of all data representing the current programming and operating status.
A sample view of the menu is shown below for reference. The top line identifies the gauge, firmware revision, and
copyright. The second line displays the gauge model, the full-scale sensor range, and the sensor identifier. Next is a
reminder notice to the operator (explained below).
Finally, all programmable registers and functions are formatted on the menu. The menu item includes its menu-
selection character, and the current register data as applicable. To change an item, simply select its character from
the terminal keypad; the appropriate sub-menu, notes, and instructions are presented for operator entry. Note that
the serial menu typically provides more flexibility for entering data values, compared with the gauge’s keypad.
SmartGauge/M2110F (vX.XX). (c) Copyright 2010 Meriam
SetPoint model. Sensor = 28.00 InH2O
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Notice! Changing any value will PAUSE Gauge Operation; see manual!
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Current Full Scale: 25.00 Cu.Ft./hour
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A) P0, LockOut Code = Disabled
B) P2, Damp Rate = 0.2 Seconds
C) P3, Measurement Mode = Square Root
D) P4, Minimum Display = 1.0000 Cu.Ft./hr.
E) P5, SetPoint Ctrl = Disabled
F) P6, SET1 = 0.0000 Cu.Ft./hr.
G) P7, SET2 = 0.0000 Cu.Ft./hr.
H) P8, Dead Band = 0.0 % Full Scale
I) P9, B Coefficient = 1.2340E-01
& Units
J) P10,C Coefficient = Not Available P3=2(Square Root)
L) Restore Factory Zero M) ReZero Gauge
X) EXIT Interactive Menu
Select Choice:
11.2 ACCESSING THE MENU
When the gauge is powered up or reset, it will print the menu to the serial port. Also, hitting the ENTER key from
the terminal will reprint the menu. If the terminal is not connected when the gauge prints the menu after power up,
the user will see no screen text until he/she presses the ENTER key to establish communications with the device.
11.3 IMPACT ON OPERATION
Use of the serial port service is independent of the operating mode of the gauge, and vice versa. It is not necessary
to change to Program Mode to use any of the menu’s features, editing programmable registers or re-zeroing. The
gauge continues its active operation regardless of the serial port service, except for the pausing explained in the next
paragraph. Any keypad activity from the front panel of the gauge will also be processed regardless of the serial port
status. If entries are made through the keypad and the serial port simultaneously, the last entry received will be
active.
SetPoint & Current Loop Models Only